| Command | What we are doing |
| telnet smtp-mail.example.net 25 | telnet to a machine that responds to smtp on port 25 |
| HELO client.example.net | issue the 'HELO' command to start (this is a "hello, I am client.example.net" introduction) |
| mail from:[email protected] | issue the 'mail from' command |
| rcpt to:[email protected] | issue the 'rcpt to' command (this should be a valid address) |
| data | now the 'data' command will allow you to do the rest... |
| subject:This is the subject | the text you want on the subject line |
| a blank line to tell indicate the next part is the message body | |
| This is the message body! | this is the message body |
| . | a 'dot' as the first and only character tells the SMTP Service to process the message |
| quit | the 'quit' command exits your telnet on port 25 |
I typed the stuff in blue below. You are looking for the return codes in green below, the text returned may change from server to server, but the codes should not. |
|
B:\>telnet smtp-mail.example.net 25
220 miniRelay Server v0.9.75 ready HELO client.example.net 250 Hello client.example.net [10.11.12.13] mail from:[email protected] 250 [email protected] Address Okay rcpt to:[email protected] 250 [email protected] Address Okay data 354 Start mail input; end with <CRLF>.<CRLF> subject:This is the subject This is the message body! . 250 Ok, Mail queued for delivery. quit 221 Signing Off. |
|